1201330289 has 2 divisors, whose sum is σ = 1201330290. Its totient is φ = 1201330288.

The previous prime is 1201330261. The next prime is 1201330331. The reversal of 1201330289 is 9820331021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1154640400 + 46689889 = 33980^2 + 6833^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201330289 - 2²⁰ = 1200281713 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201330219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600665144 + 600665145.

It is an arithmetic number, because the mean of its divisors is an integer number (600665145).

Almost surely, 2^1201330289 is an apocalyptic number.

It is an amenable number.

1201330289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201330289 is an equidigital number, since it uses as much as digits as its factorization.

1201330289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1201330289 is about 34660.2119006794. The cubic root of 1201330289 is about 1063.0511027801.

The spelling of 1201330289 in words is "one billion, two hundred one million, three hundred thirty thousand, two hundred eighty-nine".